Ganito kasi yun, if you still have your original clutch slave (2ndary master) and the inside surface of the cylinder wall is as smooth as glass, you only have to change the repair kit. The ff japan replacement brands are good: SaM, Seiken, Aisin, Miyaco. By experience the F/C brand leaks pretty easily. There are also two types of repair kit, the1st one having double rubber O-ring & the 2nd type being single O-ring. I prefer the former for obvious reasons. Next thing to consider is the "bowl" of the repair kit should be the same as with the original to maintain the "play" of the pushrod to maintain the length b/n the clutch slave piston (repair kit) & the clutch fork to have a "normal" depth of the clutch pedal. A shallower bowl will result in " nakatukod" na clutch & a deeper bowl will have the opposite. You should always bleed your clutch system when you change its hydraulic parts or you will have a deep clutch that is unable to shift.
BTW, If your clutch slave is not salvageable, you have no choice but to replace it. The ff brands are nice: Seiken, Aisin & Sam. There are plenty of cheaper brands today but they dont last long, leak pretty easily and they usually present with a stiffer clutch ....
Oh, a seasoned mechanic knows this by heart and is a piece of cake. You have to look for another mechanic if your present mechanic tells you to change your clutch disc, pressure plate & release bearing w/o even fixing your clutch hydraulics..
Cheers!





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